<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        var r =""
    for(var k=0;k<5;k++)
    {
        for(var i=0;i<5;i++)
        {
            r = r + "*"
        }

        r +="\n"
    }
        console.log(r);

    </script>
</body>
</html>